WO2013016382A3 - System for measuring current and method of making same - Google Patents

System for measuring current and method of making same Download PDF

Info

Publication number
WO2013016382A3
WO2013016382A3 PCT/US2012/048055 US2012048055W WO2013016382A3 WO 2013016382 A3 WO2013016382 A3 WO 2013016382A3 US 2012048055 W US2012048055 W US 2012048055W WO 2013016382 A3 WO2013016382 A3 WO 2013016382A3
Authority
WO
WIPO (PCT)
Prior art keywords
current
voltage
scaling factor
convert
measuring current
Prior art date
Application number
PCT/US2012/048055
Other languages
French (fr)
Other versions
WO2013016382A2 (en
Inventor
James WOELFEL
Kaijam WOODLEY
Original Assignee
Eaton Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Corporation filed Critical Eaton Corporation
Priority to AU2012286930A priority Critical patent/AU2012286930B2/en
Priority to CN201280046878.8A priority patent/CN103827676A/en
Priority to EP12750897.6A priority patent/EP2737325B1/en
Publication of WO2013016382A2 publication Critical patent/WO2013016382A2/en
Publication of WO2013016382A3 publication Critical patent/WO2013016382A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G01R13/0218—Circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/002—Switches for altering the measuring range or for multitesters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/005—Circuits for altering the indicating characteristic, e.g. making it non-linear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/08—Circuits for altering the measuring range
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/08—Circuits for altering the measuring range
    • G01R15/09—Autoranging circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing

Abstract

A system for measuring current includes a current monitoring system comprises a current sensor configured to sense a first current passing through a conductor and a voltage conversion device coupled to the current sensor and configured to receive a second current from the current sensor and convert the second current into a first voltage. A first scaling circuit is coupled to the voltage conversion device and configured to convert the first voltage to a second voltage proportional to the first current based on a first scaling factor, and a second scaling is circuit coupled to the voltage conversion device and configured to convert the first voltage to a third voltage proportional to the first current based on a second scaling factor, wherein the second scaling factor is different from the first scaling factor.
PCT/US2012/048055 2011-07-27 2012-07-25 System for measuring current and method of making same WO2013016382A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2012286930A AU2012286930B2 (en) 2011-07-27 2012-07-25 System for measuring current and method of making same
CN201280046878.8A CN103827676A (en) 2011-07-27 2012-07-25 System for measuring current and method of making same
EP12750897.6A EP2737325B1 (en) 2011-07-27 2012-07-25 System for measuring current and method of making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/192,262 US9063178B2 (en) 2011-07-27 2011-07-27 System for measuring current and method of making same
US13/192,262 2011-07-27

Publications (2)

Publication Number Publication Date
WO2013016382A2 WO2013016382A2 (en) 2013-01-31
WO2013016382A3 true WO2013016382A3 (en) 2013-11-28

Family

ID=46727572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/048055 WO2013016382A2 (en) 2011-07-27 2012-07-25 System for measuring current and method of making same

Country Status (5)

Country Link
US (1) US9063178B2 (en)
EP (1) EP2737325B1 (en)
CN (2) CN108957088A (en)
AU (1) AU2012286930B2 (en)
WO (1) WO2013016382A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5814065B2 (en) * 2011-10-03 2015-11-17 株式会社マキタ Motor current detection device, motor control device, and electric tool
US8896334B2 (en) * 2012-06-28 2014-11-25 Eaton Corporation System for measuring soft starter current and method of making same
US9547354B2 (en) * 2013-04-11 2017-01-17 Dell Products L.P. System and method for increasing current monitor power telemetry accuracy
JP6373138B2 (en) * 2014-09-17 2018-08-15 日置電機株式会社 measuring device
RU2617858C1 (en) * 2015-12-11 2017-04-28 Евгений Иванович Рожнов Electronic current transformer
CN105548628B (en) * 2015-12-24 2018-06-22 江苏麟派电力科技股份有限公司 A kind of production technology of electrical power distribution automatization system high efficiency smart fault detector
EP3646674A1 (en) * 2017-07-26 2020-05-06 Tridonic GmbH & Co KG Circuit arrangement and method for determining a signal representing a current actual value
EP3474629B1 (en) * 2017-10-19 2020-12-02 LG Electronics Inc. -1- Induction heating and wireless power transferring device having improved resonant current detection accuracy
CN110045279B (en) * 2018-01-17 2021-06-29 深圳市优必选科技有限公司 Method and system for calibrating proportional relation between torque and current of motor and terminal equipment
US11366144B2 (en) 2019-02-25 2022-06-21 Hitachi Energy Switzerland Ag Method and device for current and voltage measurement
DE102022203697B3 (en) 2022-04-12 2023-07-27 Knick Elektronische Messgeräte GmbH & Co. KG Monitoring device for highly dynamic currents, in particular for monitoring railway currents

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL183372B1 (en) * 1997-07-16 2002-06-28 Inst Tele I Radiotech Multiple-range alternating current measuring arrangement
US20030025514A1 (en) * 2001-07-26 2003-02-06 Benes Michael J. Multiple range current measurement system with low power dissipation, fast settling time, and low common mode voltage error
US20110025299A1 (en) * 2009-07-31 2011-02-03 Marko Vulovic Dual-range measurement of electrical current

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US3699391A (en) * 1971-09-02 1972-10-17 Us Interior Reactor fault relay
US4978911A (en) * 1986-02-06 1990-12-18 Oliver J. Nilsen (Australia) Limited Electrical energy analyzer
US4719361A (en) * 1986-08-18 1988-01-12 Dresser Industries, Inc. Mobile, off-road, heavy-duty haulage vehicle
US5037518A (en) * 1989-09-08 1991-08-06 Packard Instrument Company Apparatus and method for generating hydrogen and oxygen by electrolytic dissociation of water
CH684216A5 (en) * 1991-02-15 1994-07-29 Lem Liaisons Electron Mec Device for measuring currents.
US5581254A (en) * 1994-03-30 1996-12-03 Burr-Brown Corporation Electric motor control chip and method
US5920189A (en) * 1996-11-26 1999-07-06 Delco Electronics Corporation Auto ranging current monitor with common mode correction
US6259254B1 (en) * 1998-07-27 2001-07-10 Midtronics, Inc. Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
US6906655B1 (en) * 2003-12-18 2005-06-14 Eaton Corporation Plural channel analog-to-digital converter, method and meter employing an input channel with a predetermined direct current bias
CN100334799C (en) * 2004-03-29 2007-08-29 台达电子工业股份有限公司 Current detecting circuit and supply converter having same circit
CN101292415B (en) * 2005-10-09 2010-12-29 崇贸科技股份有限公司 Device and method for measuring output current from primary side of power converter
CN101162242B (en) * 2006-12-29 2010-05-12 长春工程学院 Method for testing direct current by quadrature transformer
US8275559B2 (en) * 2007-03-29 2012-09-25 Linage Power Corporation Fault detector for a tip and ring circuit, a method of protecting such a circuit and a power supply including the fault detector
CN101387662A (en) * 2007-10-08 2009-03-18 杭州利尔达科技有限公司 Watthour meter of three phase electronic electric energy meter and measurement method
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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL183372B1 (en) * 1997-07-16 2002-06-28 Inst Tele I Radiotech Multiple-range alternating current measuring arrangement
US20030025514A1 (en) * 2001-07-26 2003-02-06 Benes Michael J. Multiple range current measurement system with low power dissipation, fast settling time, and low common mode voltage error
US20110025299A1 (en) * 2009-07-31 2011-02-03 Marko Vulovic Dual-range measurement of electrical current

Also Published As

Publication number Publication date
EP2737325B1 (en) 2018-11-14
WO2013016382A2 (en) 2013-01-31
US20130027022A1 (en) 2013-01-31
CN108957088A (en) 2018-12-07
AU2012286930B2 (en) 2016-03-17
EP2737325A2 (en) 2014-06-04
US9063178B2 (en) 2015-06-23
AU2012286930A1 (en) 2014-03-13
CN103827676A (en) 2014-05-28

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